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Updated: May 26, 2026

05:15
An Aptamer-based Sensor for Unchelated Gadolinium(III)
Published on: January 9, 2017
A highly selective fluorescent chemosensor for guanosine-5'-triphosphate via excimer formation in aqueous solution of
Nisar Ahmed1, Bahareh Shirinfar, Il Seung Youn
1Center for Superfunctional Materials, Department of Chemistry Pohang University of Science and Technology, Pohang 790-784, Korea.
Abstract:
A new water-soluble and fluorescent imidazolium-anthracene cyclophane 1 effectively recognizes and differentiates the biologically important GTP and ATP in 100% aqueous solution of physiological pH 7.4. Fluorescence, (1)H-NMR spectra and ab initio calculations demonstrate that excimer formation and fluorescence enhancement occur upon GTP and ATP binding, respectively, through (C-H)(+)···A(-) hydrogen bond interactions.

